Karen Pendergrass

Karen Pendergrass, Standards Team

About

Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease, four years before the first published case study.

Recent Posts

2025-07-07

Microbiome Diet for Endometriosis

Endometriosis is a chronic, inflammatory condition affecting approximately 10% of women of reproductive age, marked by debilitating and chronic pelvic pain, infertility, and systemic inflammation. Emerging research reveals that endometriosis is closely linked to disruptions in the gut microbiome, with cross-signature overlap with irritable bowel syndrome (IBS), highlighting the potential of targeted dietary interventions to […]

2025-07-07

Endometriosis Guide

The constant bi-directional communication between microbiota and the host signifies the microbiome’s crucial role in health complications and its potential in healthcare advancements. This discussion sets the stage for exploring the microbiome’s anticipated contributions to modern medicine, particularly in addressing conditions such as endometriosis (EMS), which affects approximately 200 million individuals globally. Despite centuries […]

2025-07-07

Flavones and Flavonols

Flavones and flavonols are plant-derived compounds known for their antioxidant, anti-inflammatory, and antimicrobial properties.

2025-07-07

Infertility

Infertility is the inability to conceive after 12 months of regular, unprotected sex. It affects both men and women and can be due to various physical, hormonal, or genetic factors. Treatments include medication, surgery, assisted reproductive technologies, and lifestyle changes.

2025-07-07

Chronic Pelvic Pain (CPP)

Chronic Pelvic Pain (CPP) is persistent pain in the pelvic region lasting six months or longer, often multifactorial, impacting physical and emotional well-being, and associated with various medical conditions.

2025-07-07

Anemia

Anemia is a reduction in red blood cells or hemoglobin, often influenced by the gut microbiome’s impact on nutrient absorption.

2025-07-07

Our Validation Method

employs a systematic, data-driven approach to confirm the reliability of microbiome signatures and the efficacy of microbiome-targeted interventions (MBTIs). The process integrates comprehensive meta-analysis, machine learning-driven microbial association detection, and cross-referenced therapeutic validation, ensuring both precision and translational applicability. Validation Workflow 1. Microbiome Signature Identification A condition’s microbiome signature is established through […]

2025-07-07

Microbiome Signature Confidence Score (MSCS): A Quantitative Framework

In the ever-expanding field of microbiome research, one of the most important and contentious challenges is identifying what truly constitutes a microbiome signature for a given condition. Is it the presence of Akkermansia muciniphila in a few case reports? Is it a meta-analysis conclusion drawn from heterogeneously designed studies? Or should it be defined […]

2025-07-07

Microbial Shift and Realignment Process (MSRP)

The Microbial Shift and Realignment Process (MSRP) is the proprietary framework used to construct every microbiome signature in the Microbiome Signatures Database. It is designed to overcome the complexity, inconsistency, and heterogeneity of microbiome research by applying a structured, evidence-weighted approach to microbial pattern recognition and clinical translation. Rather than merely cataloging taxonomic associations, […]

2025-07-07

How Microbiome Signatures Are Derived

The Microbiome Signatures Database curates condition-specific microbial patterns—referred to as microbiome signatures—through a structured and reproducible synthesis process that integrates evidence across the scientific literature. This methodology prioritizes clinical relevance, microbial consistency, and actionable insight. Overview of Methodology Each microbiome signature is constructed using the Microbial Shift and Realignment Process (MSRP), a proprietary framework […]

2025-06-16

Low‑Nickel Diet (LNiD)

A low-nickel diet (LNiD) is a therapeutic dietary intervention that eliminates high-nickel foods, primarily plant-based sources such as legumes, nuts, whole grains, and cocoa, to reduce systemic nickel exposure. It is clinically validated for managing systemic nickel allergy syndrome (SNAS) and nickel-induced eczema. Its relevance is well-established in microbiome modulation, with studies demonstrating clinical benefits in conditions such as endometriosis, fibromyalgia, irritable bowel syndrome, and GERD.

2025-06-15

Lugdunin

Lugdunin is a microbiome-derived cyclic peptide antibiotic with direct anti-S. aureus activity and host immune-boosting effects. It induces LL-37 and CXCL8, recruits immune cells, and synergizes with host peptides, making it a promising candidate for MRSA and atopic dermatitis interventions.

2025-06-13

Staphylococcus aureus: A Review of the Pathogenesis and Virulence Mechanisms

This review synthesizes key mechanisms of Staphylococcus aureus virulence, including colonization strategies, immune evasion, metabolic adaptability, and antimicrobial resistance. It highlights major microbial associations, such as siderophore-mediated modulation of the nasal microbiome and PVL-driven pathogenesis, offering translational insights for microbiome-targeted diagnostics, decolonization, and anti-virulence therapies.

2025-06-13

Orange juice neutralizes the proinflammatory effect of a high-fat, high-carbohydrate meal and prevents endotoxin increase and Toll-like receptor expression 1–3

In healthy adults, co-ingesting orange juice with a high-fat, high-carbohydrate meal dramatically blunted postprandial inflammatory responses. Orange juice prevented meal-induced rises in plasma endotoxin (LPS) and monocyte Toll-like receptor expression, highlighting a novel dietary strategy to counteract metabolic endotoxemia and oxidative stress, with implications for mitigating insulin resistance and atherosclerosis.